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Wireless Flexible Strain Sensor Based on Carbon Nanotube Piezoresistive Networks for Embedded Measurement of Strain in Concrete

Abstract : This work proposes a new type of low-cost strain sensor, based on piezoresistive carbon nanotube (CNT) network deposited on a flexible substrate. Experimental results show that the strain can be reliably measured thanks to the highly linear piezoresistive behaviour of the CNT network and thanks to temperature compensation capabilities. Moreover, the experimental results show the capability of measuring multiple loading cycles. The performance and the range of sensitivity of the device, suggest possible usage in the domain of embedded monitoring, in particular the detection of micro-strain and micro-cracking in concrete. In order to target this domain, a wireless RFID solution to embed the sensor into concrete is provided.
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https://hal.inria.fr/hal-01022026
Contributor : Anne Jaigu <>
Submitted on : Thursday, July 10, 2014 - 9:57:22 AM
Last modification on : Thursday, March 12, 2020 - 6:38:02 PM
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  • HAL Id : hal-01022026, version 1

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Fulvio Michelis, Laurence Bodelot, Costel-Sorin Cojocaru, Jean-Luc Sorin, Yvan Bonnassieux, et al.. Wireless Flexible Strain Sensor Based on Carbon Nanotube Piezoresistive Networks for Embedded Measurement of Strain in Concrete. EWSHM - 7th European Workshop on Structural Health Monitoring, IFFSTTAR, Inria, Université de Nantes, Jul 2014, Nantes, France. ⟨hal-01022026⟩

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